org.datavec.image.transform

Class RotateImageTransform

java.lang.Object

org.datavec.image.transform.BaseImageTransform<org.bytedeco.javacpp.opencv_core.Mat>

org.datavec.image.transform.RotateImageTransform

All Implemented Interfaces:

ImageTransform

public class RotateImageTransform
extends BaseImageTransform<org.bytedeco.javacpp.opencv_core.Mat>

Rotates and scales images deterministically or randomly. Calls org.bytedeco.javacpp.opencv_imgproc#warpAffine(Mat, Mat, Mat, Size, int, int, Scalar) with given properties (interMode, borderMode, and borderValue).

Field Summary

Fields inherited from class org.datavec.image.transform.BaseImageTransform

converter, random

Constructor Summary

Constructors

Constructor and Description
RotateImageTransform(float angle) Calls this(null, 0, 0, angle, 0).
RotateImageTransform(java.util.Random random, float angle) Calls this(random, 0, 0, angle, 0).
RotateImageTransform(java.util.Random random, float centerx, float centery, float angle, float scale) Constructs an instance of the ImageTransform.

Method Summary

Modifier and Type	Method and Description
ImageWritable	transform(ImageWritable image, java.util.Random random) Takes an image and returns a transformed image.

Methods inherited from class org.datavec.image.transform.BaseImageTransform

transform

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RotateImageTransform

public RotateImageTransform(float angle)

Calls this(null, 0, 0, angle, 0).

RotateImageTransform

public RotateImageTransform(java.util.Random random,
                            float angle)

Calls this(random, 0, 0, angle, 0).

RotateImageTransform

public RotateImageTransform(java.util.Random random,
                            float centerx,
                            float centery,
                            float angle,
                            float scale)

Constructs an instance of the ImageTransform.

Parameters:

random - object to use (or null for deterministic)

centerx - maximum deviation in x of center of rotation (relative to image center)

centery - maximum deviation in y of center of rotation (relative to image center)

angle - maximum rotation (degrees)

scale - maximum scaling (relative to 1)

Method Detail

transform

public ImageWritable transform(ImageWritable image,
                               java.util.Random random)

Description copied from interface: ImageTransform

Takes an image and returns a transformed image. Uses the random object in the case of random transformations.

Parameters:

image - to transform, null == end of stream

random - object to use (or null for deterministic)

Returns:

transformed image